core/game_state/game_state.gd

@@ -2,7 +2,7 @@ extends Node
 
 const SAVE_PATH: String = "user://savegame.json"
 
-var save_data: Dictionary = {}
+var save_data: SaveGameData = SaveGameData.new()
 var is_loaded: bool = false
 
 func _ready() -> void:
@@ -10,22 +10,12 @@ func _ready() -> void:
 
 func save_game() -> void:
 	var save_file = FileAccess.open(SAVE_PATH, FileAccess.WRITE)
-	var save_nodes = get_tree().get_nodes_in_group("Saveable")
+	var json_string = JSON.stringify(save_data.to_dictionary())
-	var new_save_data: Dictionary = {}
-	
-	for node in save_nodes:
-		if not node.has_method("get_save_data"):
-			continue
-		
-		var node_data = node.get_save_data()
-		var node_path = str(node.get_path())
-		new_save_data[node_path] = node_data
-
-	var json_string = JSON.stringify(new_save_data)
 	save_file.store_line(json_string)
 
 func load_game() -> void:
 	if not FileAccess.file_exists(SAVE_PATH):
+		save_data = SaveGameData.new()
 		is_loaded = true
 		return
 		
@@ -35,7 +25,8 @@ func load_game() -> void:
 	var json = JSON.new()
 	var parse_result = json.parse(json_string)
 	
-	if parse_result == OK:
+	save_data = SaveGameData.new()
-		save_data = json.data
+	if parse_result == OK and json.data is Dictionary:
+		save_data = SaveGameData.from_dictionary(json.data)
 	
 	is_loaded = true

core/game_state/save_game_data.gd

@@ -0,0 +1,24 @@
+class_name SaveGameData
+extends Resource
+
+var unlocked_collectibles_ids: Array[String] = []
+var saved_photos: Array[String] = []
+
+func to_dictionary() -> Dictionary:
+	return {
+		"unlocked_collectibles_ids": unlocked_collectibles_ids,
+		"saved_photos": saved_photos,
+	}
+
+static func from_dictionary(data: Dictionary) -> SaveGameData:
+	var save_game_data := SaveGameData.new()
+
+	if data.has("unlocked_collectibles_ids"):
+		for collectible_id in data["unlocked_collectibles_ids"]:
+			save_game_data.unlocked_collectibles_ids.append(str(collectible_id))
+
+	if data.has("saved_photos"):
+		for photo_path in data["saved_photos"]:
+			save_game_data.saved_photos.append(str(photo_path))
+
+	return save_game_data

core/game_state/save_game_data.gd.uid

@@ -0,0 +1 @@
+uid://bxmvs842r82vl

core/photo_mode/collectible_gallery.gd

@@ -1,7 +1,8 @@
 extends Control
 
+@export var collectible_ui_scene: PackedScene
+
 @onready var grid_container: GridContainer = $%CollectibleGrid
-@onready var collectible_ui_scene = preload("res://core/photo_mode/collectible_ui.tscn")
 
 func _ready() -> void:
 	CollectionManager.on_collectible_unlocked.connect(_unlock_collectible)

core/photo_mode/collectible_gallery.tscn

@@ -1,6 +1,7 @@
 [gd_scene format=3 uid="uid://bvw086glfpcba"]
 
 [ext_resource type="Script" uid="uid://dq3qtcrdnikl7" path="res://core/photo_mode/collectible_gallery.gd" id="1_67tug"]
+[ext_resource type="PackedScene" uid="uid://dp7dvfauh5rpx" path="res://core/photo_mode/collectible_ui.tscn" id="2_or234"]
 
 [node name="CollectibleGallery" type="Control" unique_id=354419843]
 layout_mode = 3
@@ -12,6 +13,7 @@ anchor_bottom = 0.5
 grow_horizontal = 2
 grow_vertical = 2
 script = ExtResource("1_67tug")
+collectible_ui_scene = ExtResource("2_or234")
 
 [node name="PanelContainer" type="PanelContainer" parent="." unique_id=640179265]
 layout_mode = 1

core/photo_mode/collection_manager.gd

@@ -9,7 +9,6 @@ var unlocked_collectibles_ids: Array[String] = []
 var saved_photos: Array[String] = []
 
 func _ready() -> void:
-	add_to_group("Saveable")
 	load_save_data()
 
 func unlock_collectible(collectible_id: String) -> void:
@@ -17,6 +16,7 @@ func unlock_collectible(collectible_id: String) -> void:
 		var new_collectible = get_collectible_by_id(collectible_id)
 		if new_collectible:
 			unlocked_collectibles_ids.append(collectible_id)
+			sync_save_data()
 			on_collectible_unlocked.emit(collectible_id)
 
 func get_collectible_by_id(id: String) -> CollectibleResource:
@@ -43,28 +43,18 @@ func save_photo_to_disk_async() -> void:
 	image.save_png(file_path)
 	
 	saved_photos.append(file_path)
+	sync_save_data()
 	on_photo_saved.emit(file_path)
 
-func get_save_data() -> Dictionary:
+func sync_save_data() -> void:
-	return {
+	GameState.save_data.unlocked_collectibles_ids = unlocked_collectibles_ids.duplicate()
-		"unlocked_collectibles_ids": unlocked_collectibles_ids,
+	GameState.save_data.saved_photos = saved_photos.duplicate()
-		"saved_photos": saved_photos
-	}
 
 func load_save_data() -> void:
-	var my_path = str(get_path())
+	unlocked_collectibles_ids = GameState.save_data.unlocked_collectibles_ids.duplicate()
-	if GameState.save_data.has(my_path):
+	saved_photos = GameState.save_data.saved_photos.duplicate()
-		var data = GameState.save_data[my_path]
-		if data.has("unlocked_collectibles_ids"):
-			var loaded_ids = data["unlocked_collectibles_ids"]
-			unlocked_collectibles_ids.clear()
-			for id in loaded_ids:
-				unlocked_collectibles_ids.append(str(id))
 
-		if data.has("saved_photos"):
+	if unlocked_collectibles_ids.is_empty() and saved_photos.is_empty():
-			var loaded_photos = data["saved_photos"]
-			saved_photos.clear()
-			for photo in loaded_photos:
-				saved_photos.append(str(photo))
-	else:
 		unlocked_collectibles_ids.append("cane")
+
+	sync_save_data()

core/photo_mode/photo_gallery.gd

@@ -1,8 +1,8 @@
 extends Control
 
-@onready var grid_container: GridContainer = $%PhotoGrid
+@export var photo_scene: PackedScene
 
-@onready var photo_scene = preload("res://core/photo_mode/photo.tscn")
+@onready var grid_container: GridContainer = $%PhotoGrid
 
 func _ready() -> void:
 	CollectionManager.on_photo_saved.connect(_create_photo_thumbnail)

core/photo_mode/photo_gallery.tscn

@@ -1,6 +1,7 @@
 [gd_scene format=3 uid="uid://b6r787sik5yil"]
 
 [ext_resource type="Script" uid="uid://k4iqrlkbjppl" path="res://core/photo_mode/photo_gallery.gd" id="1_bp5uf"]
+[ext_resource type="PackedScene" uid="uid://cvus62qkop3qi" path="res://core/photo_mode/photo.tscn" id="2_45wok"]
 
 [node name="PhotoGallery" type="Control" unique_id=354419843]
 layout_mode = 3
@@ -12,6 +13,7 @@ anchor_bottom = 0.5
 grow_horizontal = 2
 grow_vertical = 2
 script = ExtResource("1_bp5uf")
+photo_scene = ExtResource("2_45wok")
 
 [node name="PanelContainer" type="PanelContainer" parent="." unique_id=640179265]
 layout_mode = 1